Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/9067
Title: Kaolinite removal from bauxite by flotation.
Authors: Rodrigues, Otávia Martins Silva
Peres, Antônio Eduardo Clark
Henriques, Andréia Bicalho
Amorim, Bárbara Gonçalves
Keywords: Froth flotation
Flotation collectors
Bauxite
Kaolinite
Issue Date: 2016
Citation: RODRIGUES, O. M. S. et al. Kaolinite removal from bauxite by flotation. Revista da Escola de Minas, v. 69, p. 349, 2016. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2016000300349>. Acesso em: 25 ago. 2017.
Abstract: This paper presents a potential condition to separate kaolinite through flotation when it is present in bauxite ore. This research anticipates a Brazilian industry requirement, considering the tendency towards the need for aluminosilicates removal from bauxite ores, as has already occurred in China. Kaolinite is the most abundant aluminosilicate, and gibbsite is the main aluminum bearing mineral in Brazilian bauxite ores. The first step was a fundamental study involving microflotation experiments with pure samples of kaolinite and gibbsite. Ammonium quaternary salts and amines were used as the collector and corn starch as the depressant. In a fundamental study, the best conditions determined in the first step were evaluated for the flotation of kaolinite from bauxite ore using laboratory scale experiments. Tests with AQ142/starch (pH 10) and CTAB (pH 7) led to satisfactory results. In general, the highest values of alumina/silica mass ratio were obtained with AQ142/starch and the highest values of mass recovery and metallurgical recovery were achieved with CTAB.
URI: http://www.repositorio.ufop.br/handle/123456789/9067
ISSN: 18070360
metadata.dc.rights.license: A Revista Escola de Minas – REM - autoriza o depósito de cópia de artigos dos professores e alunos da UFOP no Repositório Institucional da UFOP. Contato em 12 set. 2013.
Appears in Collections:DEMIN - Artigos publicados em periódicos

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